Karmazin exits on a high. Sirius ended the most recent quarter with a record 23.4 million subscribers. It also raised its guidance for net subscriber additions to 1.8 million for the full year, up from 1.6 million. Sirius will report third-quarter results Oct. 30.

“It is my great privilege to be a part of Sirius XM,” Karmazin said in a note to employees. “The last eight years have been an amazing ride.”